package com.zhang.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author ZhangJunqi
 * @Date 2022/2/21 -21:57
 */
public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object loginUser=request.getSession ().getAttribute ("loginUser");
        if(loginUser ==null || loginUser.equals ("")){
            request.setAttribute ("msg","请先进行登录");
            request.getRequestDispatcher ("/index.html").forward (request,response);
            return false;
        }else {
            return true;
        }

    }
}
